There might be a journalist who tries to expose the negative aspects of America becoming an empire. He or she could be one of the main characters. This journalist could travel around the country and the world, interviewing people affected by the new imperial policies. Along the way, he or she would encounter resistance from the government and those who support the empire - building, but also find allies in the form of anti - imperial groups. This character's journey would serve as a way to show the different sides of the story.
A politician who drives the empire - building policies could be a main character.
Well, it could show the transformation of America into an empire through economic domination. For example, American companies could gain such overwhelming influence over the global economy that other countries become economically dependent on it. This would give America a lot of power and start to resemble an empire. Also, there could be a story about how American culture spreads globally as a part of this empire - building, like Hollywood movies and American music becoming even more dominant worldwide.
The main character could be an ordinary citizen who just happens to be in the wrong place at the wrong time and gets kidnapped. For example, a tourist visiting America.
Naruto himself would be an obvious choice as a main character. His ability to make friends and his never - give - up attitude would be great in a new and different empire setting. He could be the one to bridge the gap between the shinobi world and the new empire.
The fans themselves could be main characters. They could be shown dealing with their emotions, sharing memories of the singer, and trying to keep the singer's legacy alive. For example, a group of super - fans might form a club dedicated to the singer after the death.
A possible main character could be a Westerosi noble who is intrigued by the Roman Empire and decides to journey there. He could be like Tyrion Lannister, smart and cunning, trying to navigate the new and strange world of the Romans. Another could be a Roman general who finds himself in Westeros and has to adapt to its different rules of war and power.
There could be a young and ambitious trainer named Alex. He's on a quest to become the best Pokemon trainer in America.
It could be an ordinary human on Earth who rises to become a hero against the Empire. Maybe a scientist who figures out a way to counter the Empire's force powers.
Suzaku could be another main character. His conflicted loyalties in the original series could be translated into this new setting. He might be on the side of the British at first, but then have a change of heart after seeing the injustices they are committing in America. His piloting skills could also come in handy, perhaps in battles against the British forces that have advanced mecha technology, similar to the Knightmare Frames in the original 'Code Geass'.
Obviously, America would be the main character. There could also be some sort of selection committee or judges as supporting characters.
A group of ninja who oppose the new order of the Naruto Empire could be the main antagonists. They might believe that the empire has become too controlling or has strayed from the original values of the ninja world. They could use guerrilla tactics and create internal unrest within the empire to try and bring it down.